发明名称 |
CROSSFLOW TYPE FILTERING OPERATION METHOD USING CERAMIC FILTER |
摘要 |
<p>Provided is a simple filtering operation method capable of conducting a filtering operation without clogging in a ceramic filter for a long period of time, in the operation of filtering fine crystals of terephthalic acid in an oxidation reaction mother liquor obtained in a process of terephthalic acid production by a cross-flow filtration using the ceramic filter. The present invention can be accomplished by conducting an operation for filtering the fine crystals and a back washing operation with a filtrate while maintaining a flowing circulation operation of the oxidation reaction mother liquor under predetermined conditions.</p> |
申请公布号 |
EP2634169(A1) |
申请公布日期 |
2013.09.04 |
申请号 |
EP20110836289 |
申请日期 |
2011.10.25 |
申请人 |
MITSUBISHI GAS CHEMICAL COMPANY, INC. |
发明人 |
ZAIMA, FUMIYA |
分类号 |
C07C51/43;B01D29/25;B01D29/37;B01D35/22;B01D37/04;B01D61/14;B01D61/22;B01D65/02;B01D65/06;B01D71/02;C07C63/24 |
主分类号 |
C07C51/43 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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